How can I get a bode magnitude to be a certain size vector?

I've generated a transfer function, from which I need the magnitude as a vector to perform some integration on. The magnitude needs to be multiplied by a PSD (power spectral density) and then integrated using trapz(). The issue is that the PSD and magnitude vectors are different lengths, so trapz doesnt work. Is there a way I can specify the size of the magnitude vector so that is its a 1x10000 column vector? Below is my transfer function and how I have extracted the magnitude vector.

tf =

0.0001121 s^3 - 0.000292 s^2 - 0.0002738 s - 1.711e-05

------------------------------------------------------

s^4 + 5.701 s^3 + 20.31 s^2 + 0.6124 s + 0.3877

% Continuous-time transfer function.

[mag phase] = bode(tf)

MAG = sqeeze(mag)

Answer 1

[Star Strider]

The bode function allows you to specify a vector of frequencies in radians/time_unit.. See the documentation section on Bode Plot at Specified Frequencies and w for details. That way, you can control the size of the output.

[jrz]

Thank you veyr much for your answer, it worked

[Star Strider]

As always, my pleasure!